Thread: My Experimental Vacuum Chamber

Originally Posted by cudarunner

I too think that kind of money is out of my range.

But it got me to thinking:





'What if' instead of my 12"X12' glass plate was say a 3/4" piece of Plexiglas that had the pattern of the Pyrex baking pan routed out say 1/4" deep and then filled with Silicone. OR perhaps simply a piece of 3/4" plywood that was sealed and then the groove routed and filled with Silicone

Then having say that glass plate coated with Vaseline and then clamped down to level the silicone and let the silicone cure for a few days?

I used feeler gauges and the widest gap between the glass and the bake-ware is 30 thousandths.

As my friend walleyeyman likes to say; "Always Thunkin"

Almost exactly what I built even spent days with sandpaper making the top of the Pyrex even as possible and creating a larger flat for the Silicon to grab onto...

Just could not get it to work, and the Pickle Jar was SO easy, it was pretty frustrating to put in all that work and fail at something that seemed pretty simple..

I tried the Vaseline after the Silicon seal failed..

One thing I have learned is that the solutions will destroy the seals on the lids so you have to think ahead for their eventual failure